void
update_dbase(time_t TimeStamp, char *NodeName, json_object *jobj)
{
int DBTimeStamp = -1;
int blobid = -1;
int overwrite = 0;
//printf("NodeName - %s, TimeStamp - %ld\n", NodeName, TimeStamp);
// Now check if the NodeName exists in the datastore table
// If so compare the timestamp values and decide what to do.
if ((DBTimeStamp = NodeTS_fromDB(NodeName, db)) == -1) {
// PKT with data from a new node
insert_json(NodeName, TimeStamp, jobj, db);
blobid = NodeBID_fromDB(NodeName, db);
insertLookups(blobid, jobj, db);
} else if (DBTimeStamp < TimeStamp) {
// PKT with newer time stamp
blobid = NodeBID_fromDB(NodeName, db);
overwrite = 1;
update_insertLookups(blobid, jobj, db, overwrite);
merge_json(NodeName, TimeStamp, jobj, db, overwrite);
#ifdef WWDEBUG
printf("Just finished processing PKT with newer time stamp\n");
#endif
} else if (DBTimeStamp >= TimeStamp) {
// PKT with same time stamp or with older time stamp
blobid = NodeBID_fromDB(NodeName, db);
overwrite = 0;
#ifdef WWDEBUG
printf("About to update & insert\n");
#endif
update_insertLookups(blobid, jobj, db, overwrite);
#ifdef WWDEBUG
printf("Just finished half processing PKT with older or same time stamp\n");
#endif
merge_json(NodeName, TimeStamp, jobj, db, overwrite);
#ifdef WWDEBUG
printf("Just finished processing PKT with older or same time stamp\n");
#endif
}
}
/**
* Merges two JSON objects
*
* On conflicts, object a will be preferred.
*
* Internally, this functions merges all entries from object a into object b,
* so merging a small object a with a big object b is faster than vice-versa.
*/
static struct json_object * merge_json(struct json_object *a, struct json_object *b) {
if (!json_object_is_type(a, json_type_object) || !json_object_is_type(b, json_type_object)) {
json_object_put(b);
return a;
}
json_object_object_foreach(a, key, val_a) {
struct json_object *val_b;
json_object_get(val_a);
if (!json_object_object_get_ex(b, key, &val_b)) {
json_object_object_add(b, key, val_a);
continue;
}
json_object_get(val_b);
json_object_object_add(b, key, merge_json(val_a, val_b));
}
json_object_put(a);
return b;
}